vRealize Operations Manager 7.5 - Part3 - Rightsizing

In this article, I will briefly explain a performance optimization feature in vROps. This feature will help the user/ customer to easily find out a list of oversized and undersized VMs. vROps will provide recommendations on allocating the right amount of resources to the VM. 

Rightsizing

As you can see in the screenshot above, there are 29 VMs that are oversized. And vROps is providing recommendations on the amount of CPU and memory reduction that can be done to optimize performance. Oversizing always have a negative impact on the performance and it is recommended to allocate the right amount of resources to a VM for optimal performance. Let's take an example of one of the VM. 

You can see that the recommendation by vROps is to reduce 8 vCPUs and 15 GB of memory. This recommendation is based on the analytics and forecasting capabilities of vROps. You can click on the VM name and it will show more details regarding the selected VM.

vROps also provides a way to resize the VMs directly from the console. You can select the VMs that you would like to resize, and click "RESIZE VM(S)".

NOTE: The workloads may be interrupted as it may require restart during resizing. 

VMware guidance: CPU Ready time and Co-Stop values per core greater than 5% and 3% respectively could be a performance concern. 

Hope it was useful. Cheers!

Related posts:

Real-time VMware VM resource monitoring using PowerShell

vRealize Operations Manager 7.5 - Part2

vRealize Operations Manager 7.5 - Part1

vRealize Operations Manager 7.5 - Part2 - Configure vCenter adapter and dashboards overview

In this post, I will explain how to configure the vCenter adapter and will also walk through some of the native dashboards.

Configuring vCenter adapter

• Login to vROps.
• Click the Administration tab.
• Select the vCenter Adapter. 
• Click the gears icon.

• Provide necessary details.

• Test connection.

• Click save settings and close.
• Once the above steps are done, in a few seconds you can see "Adapter Status" as Data receiving and "Collection State" as Collecting.  

Note: After configuring the vCenter adapter you should actually wait for few days for all the data to get collected and populated.

Dashboards

This is the place where most of the System administrators/ Operations Engineers spend their time for understanding/ evaluating the operational aspects of their virtual infrastructure, capacity planning, troubleshooting various issues, performance optimizations, etc.  vROps has many pre-canned dashboards that you get out-of-the-box. Below screenshot shows how to select/ navigate multiple dashboards that are available in vROps.

Now, I will just briefly explain some of my favorite dashboards. 

Operations Overview

This dashboard provides data center summary. It provides info about the total number of clusters, hosts, total VMs, running VMs, datastores, etc. This dashboard also has widgets showing details about the top VMs experiencing CPU contention, memory contention, and disk latency.

Utilization Overview

This dashboard provides a summary of the environment based on the selection. In this case, I selected a cluster. It shows the total (CPU/ memory/ storage) capacity of the selected environment, usable capacity, used capacity, remaining capacity, etc. This will be very useful for capacity planning of resources.  

Cluster Utilization

This dashboard shows the CPU, memory, disk IOPS and network usage trends at the cluster level.

Datastore Utilization

This dashboard provides detailed info on datastore usage trends and heatmap based on datastore capacity/ utilization.

Heavy Hitter VMs

This dashboard provides cluster-level CPU, memory, IOPS and network throughput. It also gives a list of VMs which has generated the highest CPU demand, memory demand, highest IOPS and network throughput. This is very useful for identifying the VMs that has the highest resource consumption. 

Hope it was useful. Cheers!

Related posts:

vRealize Operations Manager 7.5 - Part1